Semi-automatic locking device for the triggers of small-arms.



H. SAUER. AUTOMATIC LOCKING DEVICE FOR THE TRIGGBRS OF SMALL ARMS.

Patented May 20, 1913.

SEMI- LGQQJLQL APPLICATION TILED DEC. 30, 1912.

invrran HANS SAUER, or SUHL, GERMANY, assrerron TO THE FIRM or J. r. sans-n & some,

or SUHL, GERMANY.

SEMI-AUTOMATIC LOCKING DEVICE FOR THE TRIGGERS OF SMALL-ARMS.

Specification of Letters Patent.

Application filed December 30, 1912. Serial No. 739,261.

trigger is locked not only as long as the magazine is removed for discharging it, but also subsequently in whatever position the magazine may be at the time, the locking device being released only when a lateral slide has been intentionally shifted by hand. i

As compared with all arrangements known heretofore my improved construction has the following advantages, viz; firstly, the cartridge which remains in the barrel when the magazine is discharged remains safeguarded under all circumstances until, owing to the position of the slide and the fixed trigger. it is remembered that the weapon has not yet been actually discharged, and, secondly, the locking device remains in its operative position after the discharged magazine has been returned to its place.

According to my invention the locking device comprises a spring-influenced double lever in combination with a spring-inilu cnccd pin.

Ono illustrative embodiment of my invention as applied to an automatic pistol is represented by way of example in the accompanying drawing, wherein Figure l is a sectional elevation showing the locking device in its operative position, the magazine having been removed, and Figs. 1 and 1" are sections taken on the lines a-?) and c-cl, respectively; Fig. 2 is a sectional elevation showing the locking device in its operative position when the magazine is inserted; Fig. 3 is a like view show" ing the locking device in its inoperative po sition, and Figs. 3 and 3" are sections taken on the line e-f and 9-41. in Fig. 3.

Referring to the drawing, a pair of levers 3, 4 able to. rock about a common pivot 2 is located behind the trigger I. T he two levers are acted on by the compressed. coil spring 5 located between them, and the lever l is also influenced by the coil spring 8. The relative strength of the two springs is such that the spring 5 is able to overcome the spring 6. N ow when themagazine'is removed from the handle portion of the weapon, the spring 6 which was held compressed by the magazine is released and pushes the levers 3 and i upward, so that the lever 3 moves into the path of the magazine, and the lever 4 bears against a-stop 1" of the-trigger 1. At the moment when the lever 4 moves in this manner the pin '2', which is also located below the lever i and is under the influence of a spiral spring 8, is liberated and bears directly with its face 7 under the lever i and locks the latter in the position locking the trigger 1.

"When the magazine is removed the trigger 1 is doubly locked, namely, on the one hand by the double lever 3, i and, on the other hand, by the face 7 coacting with the part 4 of the double lever 3, at. The trigger is still propped in this manner when the magazine is returned into its position because although the lever 3 is rocked and the spring 5 compressed the lever 4 experiences no change of position. The locking device is unlocked only by the pin 7 being pushed by the pressure of afinger into the casing of the weapon. The lever 4 then slides under the influence of the spring 5 away from the face 7 a into the recess 7 of the pin 7, e. the lever 4 moves downward and releases the stop 1 of the trigger l.

I claim 1. In an automatic small-arm, the combination with the casing and the trigger, having av stop, mounted therein, of a springinliucnced pair of levers mounted to rock in the casing, one of the levers being adapted to rock into and out of the path of the magazine and the second lever being adapted to bear against said stop, and a springinlluenced pm slidable in the casing and normally locking the second lever against said stop.

, 'Zl In an. automatic small-arm, the combi nation with the casing and the trigger, having a stop, mounted therein, of a'springinfluenced pair of lovers mounted to rock in the 'asing, one of the levers being adapted to rock into and out of the path of the magazine and the second lever being adapted to bear against said stop, a spring tending to pressthe second lever against said stop and Patented May 2%}, 19.23. 1

simultaneously tending to drive the former lever into the path of the magazine, and a spring-influenced pin slidable in the casing and normally locking against said stop.

3. In an automatic small-arm, the combination with the casing and the trigger, having a stop, mounted therein, of two levers mounted to rock about a common fulcrum in the casing, a spring compressed between the two levers, one of the levers being adapted to rock into and out of the path of the magazine and the second lever being adapted to bear against said stop, a s 'iringtending to press the second lever against said stop and sin'iultaneously.tending to drive the former lever into the path of the magazine, the latter spring being weaker than the former s spring, and a spring-infiuenced pin slidable .in the casing and normally locking the secondlevcr'against said stop.

4. In an automatic small-arm,the combithe second lever nation with the casing and the trigger, hav ing' a stop, mounted therein, of a springinf'luenced pair of levels mounted to rock in the casing, one of the lovers being adapted to rock into and out of the path of the maga zine and the second lever being adapted to bear against said stop, a recessed pin slid able in and projecting out of the casing, and a spring tending to drive the pin out of the casing, the top face of the pin normally locking the second lever against said stop, and the recess in the pin being adapted to receive the second lever when the pin is pushed inward against the action of the spring, for the purpose specified.

In testimony whereof, I afiix my signature in the presence of two Witnesses.

HANS SAUER.

\Vitnesses WM. H. Mummy, S. Hmzn. 

